14 KiB
14 KiB
Quality House — empty (training)
Same 14 WHATs × 14 HOWs chassis as quality-house.md,
with the relations, roof correlations, and basement Σ / Rel %
deliberately blank. Fill them in yourself, then compare against the
populated house to check your reading.
Kept (definitional inputs from qfd.md):
- WHATs + importance weights (§1)
- HOWs + v0.1 targets (§2)
Blank (training surface):
- Relation matrix (W × H)
- Roof correlations (H × H)
- Basement Σ abs and Rel %
- Perception zone (hidden, not part of the relation/correlation exercise)
% =====================================================================
% QFD "House of Quality" preamble
% =====================================================================
\usetikzlibrary{arrows.meta, positioning, shapes.geometric, shapes.misc, calc, fit, backgrounds}
\newif\ifqfdshowroof \qfdshowrooftrue
\newif\ifqfdshowbasement \qfdshowbasementtrue
\newif\ifqfdshowcompetitive \qfdshowcompetitivetrue
\newif\ifqfdshowlegend \qfdshowlegendtrue
\newif\ifqfdshowimportance \qfdshowimportancetrue
\newif\ifqfdshowcorrlegend \qfdshowcorrlegendtrue
\newif\ifqfdshowevallegend \qfdshowevallegendtrue
\def\qfdNW{5}
\def\qfdNH{5}
\def\qfdWhatW{4.0}
\def\qfdImpW{0.9}
\def\qfdCmpW{3}
\def\qfdHdrH{2.6}
\def\qfdBasementN{4}
\def\qfdWhatsTitle{Customer needs}
\def\qfdImpTitle{Imp.\ \%}
\def\qfdPerceptionTitle{Comparative evaluation}
\def\qfdPoorLabel{poor}
\def\qfdExcellentLabel{excellent}
\def\qfdAltOneLabel{Typoena}
\def\qfdAltTwoLabel{Competitor A}
\def\qfdAltThreeLabel{Competitor B}
\def\qfdRelTitle{Relation}
\def\qfdCorrTitle{Correlation}
\def\qfdEvalTitle{Evaluation}
\tikzset{
qfdthin/.style ={line width=0.35pt},
qfdmed/.style ={line width=0.7pt},
qfdstrong/.style={circle, draw, fill=black,
minimum size=7pt, inner sep=0pt},
qfdmod/.style ={circle, draw,
minimum size=7pt, inner sep=0pt, line width=0.8pt},
qfdweak/.style ={regular polygon, regular polygon sides=3, draw,
minimum size=8.5pt, inner sep=0pt, line width=0.7pt},
qfdrel/.is choice,
qfdrel/S/.style={qfdstrong},
qfdrel/M/.style={qfdmod},
qfdrel/W/.style={qfdweak},
qfdalt1mk/.style={circle, draw, fill=black,
minimum size=6pt, inner sep=0pt, line width=1pt},
qfdalt1ln/.style={line width=1.2pt},
qfdalt2mk/.style={regular polygon, regular polygon sides=3, draw,
fill=black, minimum size=6pt, inner sep=0pt,
line width=0.7pt},
qfdalt2ln/.style={line width=0.7pt, dashed},
qfdalt3mk/.style={rectangle, draw, fill=black,
minimum size=5pt, inner sep=0pt, line width=0.7pt},
qfdalt3ln/.style={line width=0.7pt, dotted},
}
\newcommand{\qfdDrawGrid}{%
\foreach \c in {1,...,\qfdNHm} \draw[qfdthin] (\c, 0) -- (\c, -\qfdNW);
\foreach \r in {1,...,\qfdNWm} \draw[qfdthin] (0, -\r) -- (\qfdNH, -\r);
\foreach \r in {1,...,\qfdNWm}
\draw[qfdthin] (\qfdLeftEdge, -\r) -- (0, -\r);
\ifqfdshowroof
\foreach \c in {1,...,\qfdNHm}
\draw[qfdthin] (\c, 0) -- (\c, \qfdHdrH);
\fi
\ifqfdshowcompetitive
\foreach \r in {1,...,\qfdNWm}
\draw[qfdthin] (\qfdNH, -\r) -- (\qfdNH+\qfdCmpW, -\r);
\fi
\ifqfdshowbasement
\foreach \r in {1,...,\qfdBasementN}
\draw[qfdthin] (0, -\qfdNW-\r) -- (\qfdNH, -\qfdNW-\r);
\foreach \c in {1,...,\qfdNHm}
\draw[qfdthin] (\c, -\qfdNW) -- (\c, -\qfdNW-\qfdBasementN);
\fi
}
\newcommand{\qfdDrawRoof}{%
\ifqfdshowroof
\foreach \k in {1,...,\qfdNHm} {%
\pgfmathsetmacro{\rx}{(\k+\qfdNH)/2}
\pgfmathsetmacro{\ry}{\qfdHdrH + (\qfdNH-\k)/2}
\pgfmathsetmacro{\lx}{\k/2}
\pgfmathsetmacro{\ly}{\qfdHdrH + \k/2}
\draw[qfdthin] (\k, \qfdHdrH) -- (\rx, \ry);
\draw[qfdthin] (\k, \qfdHdrH) -- (\lx, \ly);
}%
\draw[qfdmed] (0, \qfdHdrH)
-- (\qfdNH/2, \qfdApexY) -- (\qfdNH, \qfdHdrH);
\foreach \i in {1,...,\qfdNH}
\foreach \k in {1,...,\qfdNH} {%
\pgfmathtruncatemacro{\jj}{\i+\k}
\ifnum\jj>\qfdNH\relax\else
\pgfmathsetmacro{\xx}{\i + \k/2 - 0.5}
\pgfmathsetmacro{\yy}{\qfdHdrH + \k/2}
\coordinate (C-\i-\jj) at (\xx, \yy);
\fi
}%
\fi
}
\newcommand{\qfdDrawScale}{%
\ifqfdshowcompetitive
\foreach \tk in {0,1,2,3,4,5} {%
\pgfmathsetmacro{\tx}{\qfdNH + (\tk+0.5)*\qfdCmpW/6}
\node[anchor=south, font=\scriptsize] at (\tx, 0.02) {\tk};
}%
\node[anchor=south, font=\scriptsize\bfseries, align=center,
text width=\qfdCmpW cm]
at ({\qfdNH + \qfdCmpW/2}, 0.7) {\qfdPerceptionTitle};
\node[anchor=north, font=\scriptsize\itshape]
at ({\qfdNH + 0.45}, -\qfdNW) {\qfdPoorLabel};
\node[anchor=north, font=\scriptsize\itshape]
at ({\qfdNH + \qfdCmpW - 0.45}, -\qfdNW) {\qfdExcellentLabel};
\fi
}
\newcommand{\qfdDrawZoneTitles}{%
\ifqfdshowimportance
\node[rotate=90, anchor=west, font=\footnotesize\bfseries]
at ({-\qfdImpW/2}, 0.12) {\qfdImpTitle};
\fi
\node[font=\scriptsize\bfseries, align=center, text width=\qfdWhatW cm]
at ({\qfdLeftEdge + \qfdWhatW/2},
{\ifqfdshowroof \qfdHdrH/2 \else 0.6 \fi}) {\qfdWhatsTitle};
}
\newcommand{\qfdDrawFrames}{%
\begin{scope}[qfdmed]
\draw (\qfdLeftEdge, 0) rectangle (\qfdNH, -\qfdNW);
\ifqfdshowimportance \draw (-\qfdImpW, 0) -- (-\qfdImpW, -\qfdNW); \fi
\draw (0, 0) -- (0, -\qfdNW);
\ifqfdshowroof
\draw (0, 0) rectangle (\qfdNH, \qfdHdrH); \fi
\ifqfdshowbasement
\draw (0, -\qfdNW) rectangle (\qfdNH, -\qfdNW-\qfdBasementN); \fi
\ifqfdshowcompetitive
\draw (\qfdNH, 0) rectangle (\qfdNH+\qfdCmpW, -\qfdNW); \fi
\end{scope}
}
\newcommand{\qfdDrawLegend}{%
\ifqfdshowlegend
\pgfmathsetmacro{\qfdLegX}{%
\qfdNH + \ifqfdshowcompetitive \qfdCmpW + 0.7 \else 0.7 \fi}
\pgfmathsetmacro{\qfdLegBottom}{%
-2.05
\ifqfdshowroof \ifqfdshowcorrlegend - 2.55 \fi \fi
\ifqfdshowcompetitive \ifqfdshowevallegend - 2.20 \fi \fi}
\pgfmathsetmacro{\qfdLegY}{\qfdHdrH - 0.4}
\begin{scope}[shift={(\qfdLegX, \qfdLegY)}]
\draw[qfdmed, rounded corners=2pt]
(-0.15, 0.4) rectangle (4.5, \qfdLegBottom);
\node[anchor=west, font=\footnotesize\bfseries] at (0, 0.1)
{\qfdRelTitle};
\draw[qfdthin] (0, -0.15) -- (4.35, -0.15);
\node[qfdstrong] at (0.22, -0.5) {};
\node[anchor=west] at (0.5, -0.5) {Strong (9)};
\node[qfdmod] at (0.22, -0.95) {};
\node[anchor=west] at (0.5, -0.95) {Medium (3)};
\node[qfdweak] at (0.22, -1.4) {};
\node[anchor=west] at (0.5, -1.4) {Weak (1)};
\ifqfdshowroof \ifqfdshowcorrlegend
\node[anchor=west, font=\footnotesize\bfseries] at (0, -2.10)
{\qfdCorrTitle};
\draw[qfdthin] (0, -2.35) -- (4.35, -2.35);
\node[anchor=west] at (0, -2.70) {{$+\!+$}\quad very positive};
\node[anchor=west] at (0, -3.05) {{$+$\phantom{$+$}}\quad positive};
\node[anchor=west] at (0, -3.40) {{$-$\phantom{$-$}}\quad negative};
\node[anchor=west] at (0, -3.75) {{$-\!-$}\quad very negative};
\fi \fi
\ifqfdshowcompetitive \ifqfdshowevallegend
\pgfmathsetmacro{\qfdEvalTop}{%
-2.10 \ifqfdshowroof\ifqfdshowcorrlegend - 2.55 \fi\fi}
\node[anchor=west, font=\footnotesize\bfseries]
at (0, \qfdEvalTop) {\qfdEvalTitle};
\pgfmathsetmacro{\qfdEvalSep}{\qfdEvalTop - 0.25}
\draw[qfdthin] (0, \qfdEvalSep) -- (4.35, \qfdEvalSep);
\pgfmathsetmacro{\qfdLegA}{\qfdEvalTop - 0.55}
\draw[qfdalt1ln] (0.05, \qfdLegA) -- (0.45, \qfdLegA);
\node[qfdalt1mk] at (0.25, \qfdLegA) {};
\node[anchor=west, font=\bfseries] at (0.55, \qfdLegA)
{\qfdAltOneLabel};
\pgfmathsetmacro{\qfdLegB}{\qfdEvalTop - 0.95}
\draw[qfdalt2ln] (0.05, \qfdLegB) -- (0.45, \qfdLegB);
\node[qfdalt2mk] at (0.25, \qfdLegB) {};
\node[anchor=west] at (0.55, \qfdLegB) {\qfdAltTwoLabel};
\pgfmathsetmacro{\qfdLegC}{\qfdEvalTop - 1.35}
\draw[qfdalt3ln] (0.05, \qfdLegC) -- (0.45, \qfdLegC);
\node[qfdalt3mk] at (0.25, \qfdLegC) {};
\node[anchor=west] at (0.55, \qfdLegC) {\qfdAltThreeLabel};
\fi \fi
\end{scope}
\fi
}
\newenvironment{qfdhouse}{%
\begin{tikzpicture}[x=1cm, y=1cm, font=\scriptsize,
line cap=round, line join=round]
\ifqfdshowimportance
\pgfmathsetmacro{\qfdLeftEdge}{-\qfdWhatW-\qfdImpW}
\else
\pgfmathsetmacro{\qfdLeftEdge}{-\qfdWhatW}
\fi
\pgfmathsetmacro{\qfdApexY}{\qfdHdrH + \qfdNH/2}
\pgfmathtruncatemacro{\qfdNHm}{\qfdNH - 1}
\pgfmathtruncatemacro{\qfdNWm}{\qfdNW - 1}
\qfdDrawGrid
\qfdDrawRoof
\qfdDrawScale
\qfdDrawZoneTitles
}{%
\qfdDrawFrames
\qfdDrawLegend
\end{tikzpicture}%
}
% --- Dimensions tuned for the typewriter QFD (14 W x 14 H) ---
\def\qfdNW{14}
\def\qfdNH{14}
\def\qfdWhatW{4.6}
\def\qfdImpW{0.7}
\def\qfdHdrH{5.0}
\def\qfdBasementN{3}
% Hide the perception zone — not part of the relation/correlation exercise.
\qfdshowcompetitivefalse
\qfdshowevallegendfalse
\def\qfdWhatsTitle{User-facing requirements (W)}
\def\qfdImpTitle{Weight}
\begin{document}
\begin{qfdhouse}
% ---------- WHATs (left column) ----------
\pgfmathsetmacro{\qfdWhatTextW}{\qfdWhatW - 0.2}
\foreach \r/\t in {%
1/{W1 Sub-second visible response to typing},
2/{W2 Publishing is one deliberate action away},
3/{W3 Pulling power never corrupts the file},
4/{W4 Provisioning never interrupts a writing session},
5/{W5 Quick boot to a writing cursor},
6/{W6 Long sessions without crash, lag, drift},
7/{W7 Nothing on the device competes with prose},
8/{W8 The UI never moves except when I move it},
9/{W9 Codebase absorbs the planned roadmap},
10/{W10 I can repair or fork it with hobbyist tools},
11/{W11 Multi-day battery life (v0.8 onward)},
12/{W12 Local-only files coexist with git scope (v0.5+)},
13/{W13 Typography sets a writing-tool tone},
14/{W14 I can carry the device and write away from a desk}%
}
\node[anchor=west, font=\scriptsize,
text width=\qfdWhatTextW cm, align=left]
at ({\qfdLeftEdge + 0.1}, {-\r + 0.5}) {\t};
% ---------- Importance (raw 1-10 weight) ----------
\foreach \r/\w in {1/10, 2/9, 3/10, 4/7, 5/6, 6/9, 7/8, 8/7,
9/8, 10/5, 11/4, 12/5, 13/7, 14/8}
\node[font=\scriptsize] at ({-\qfdImpW/2}, {-\r + 0.5}) {\w};
% ---------- HOWs (rotated column titles) ----------
\foreach \c/\t in {%
1/{H1 Type latency},
2/{H2 Refresh area per keystroke},
3/{H3 Full-refresh cadence},
4/{H4 Boot latency (cold)},
5/{H5 Continuous-typing endurance},
6/{H6 Publish reliability},
7/{H7 Publish latency},
8/{H8 Save durability},
9/{H9 PSRAM heap headroom},
10/{H10 Firmware binary size},
11/{H11 Total stack budget},
12/{H12 Network reconnect time},
13/{H13 Idle / typing / push current},
14/{H15 Clean release build time}%
}
\node[rotate=90, anchor=west, font=\scriptsize]
at ({\c - 0.5}, 0.15) {\t};
% ---------- Relation matrix (fill in: S=9, M=3, W=1) ----------
% Syntax: \node[qfdrel/S] at ({COL - 0.5}, {-ROW + 0.5}) {};
% Example for W1 (row 1) × H1 (col 1) strong:
% \node[qfdrel/S] at ({1 - 0.5}, {-1 + 0.5}) {};
% ---------- Roof correlations (fill in) ----------
% Syntax: \node[font=\scriptsize] at (C-i-j) {SYMBOL};
% i < j are HOW column indices.
% SYMBOL ∈ {$+\!+$ very positive, $+$ positive,
% $-$ negative, $-\!-$ very negative}.
% Example: \node[font=\scriptsize] at (C-1-2) {$+\!+$};
% ---------- Basement: target / abs / rel% ----------
% Targets (v0.1, from qfd.md §2) are kept. Σ abs and Rel % are blank —
% compute them from your relations: abs = Σ over WHATs of
% (importance × cell strength), with strength 9 / 3 / 1 / 0.
\foreach \c/\tgt in {%
1/{$\leq$200\,ms},
2/{$\leq$1 line},
3/{1 : 20},
4/{$\leq$5\,s},
5/{$\geq$1\,h},
6/{$\geq$95\,\%},
7/{$\leq$30\,s},
8/{100\,\%},
9/{$\geq$1\,MB},
10/{$\leq$2\,MB},
11/{$\leq$80\,KB},
12/{$\leq$30\,s},
13/{obs.},
14/{$\leq$7\,min}%
}
\node[font=\scriptsize] at ({\c - 0.5}, {-\qfdNW - 0.5}) {\tgt};
% ---------- Basement row labels ----------
\foreach \k/\lbl in {1/{Target (v0.1)}, 2/{$\Sigma$ abs}, 3/{Rel.\ \%}}
\node[anchor=east, font=\scriptsize\itshape]
at ({-0.1}, {-\qfdNW - \k + 0.5}) {\lbl};
\end{qfdhouse}
\end{document}
How to fill it in
- Relations (centre). For each WHAT × HOW cell where the HOW
contributes to the WHAT, drop a marker:
Leave a cell empty for "no relation."
\node[qfdrel/S] at ({COL - 0.5}, {-ROW + 0.5}) {}; % strong = 9 \node[qfdrel/M] at ({COL - 0.5}, {-ROW + 0.5}) {}; % medium = 3 \node[qfdrel/W] at ({COL - 0.5}, {-ROW + 0.5}) {}; % weak = 1 - Roof. For each pair of HOWs that reinforce or conflict:
Symbols:
\node[font=\scriptsize] at (C-i-j) {$+\!+$}; % i < j$+\!+$very positive,$+$positive,$-$negative,$-\!-$very negative. Leave a slot empty for "independent." - Basement Σ abs. Per HOW column, sum
(importance × cell strength)over all WHATs that touch it (strength 9 / 3 / 1 / 0). - Basement Rel %. Each Σ ÷ total Σ × 100, rounded to integer percent (should sum to ~100 across HOWs).
Once filled, diff your numbers against quality-house.md
basement and roof to see where your reading agrees or differs — divergences
are usually the most interesting part.
Gotchas
<and>render as¡¿in node text — use$<$,$>$,$-$.- Row 1 is the top WHAT; column 1 is the leftmost HOW.
- The perception zone is hidden here on purpose. To bring it back, delete
the two
\qfdshow...falselines near the top of the document.